Apparatus for receiving and strengthening electric oscillations.



J. SCHIESSLER.

APPARATUS FOR RECEIVING AND STRENGTHENING ELECTR|C 0SC|LLATIONS.

APPLICATION FILED DEC. 23, I912.

Patented Dec. 28, 1915.

J'OSEF SCHIESSLER, OF-BADEN, N EAR VIENNA, AUSTRIA-HUNGARY.

APPARATUS I'OR RECEIVING AND STRENGTHENING ELECTRIC OSCILLATIONS.

Specification of Letters Patent.

Patented Dec. 28, 1915,

Original application filed November 23, 1910, Serial No. 593,890.Diiridecl and this application filed December 23, 1912.

To all whom it may concern: 7

Be it known that I, Dr. Josnr SoHIEss- LER, subject of the Emperor ofAustria-Hungary, residing at Baden, near Vienna, Austria-Hungary, haveinvented certain new and useful Improvements in Apparatus for Receivingand Strengthening Electrical Oscillations, of which the following is aspecification and is a division of my application Serial No. 593,890,filed November 23, 1910.

This invention relates to receiving and strengthening apparatus forelectrical undulations and has for its object to provide an arrangement,whereby very weak electrical oscillations or undulations such as thoseoccurring in electric telegraphy or telephony with or without wire maybe detected and strengthened, so as to cause powerful undulations in thecurrent of the receiving instrument. According to this invention anelectrode suspended in a pendulum like manner andeasily movable, whichdsprovided with a suitably shaped soft iron core is arranged so'as to befixed in the direction of its axis by an adjustable magnetic fielddamping its free and forced oscillations. The other electrodes,hereinafter termed contacts, which may be made wholly or in part of aradioactive substance or of an alloy containing the same are adjustablymounted on twooscillatory electrodes which in their turn may be fixed byan adjustable magnetic The resistance formed by the transition of thecurrent between said electrodes, which will hereinafter be referred toas the transitional resistance and which may for instance be an arc, isacted upon by influencing the pendulum electrode by adjustableelectromagnets of a suitable magnetic system, which may slide lengthwisewith respect to the said electrode in order to obtain a varyingsensitivity of the arrangement.

The electromagnets, which may be connected. either in series or inparallel, are acted upon by the oscillations or undulations to bedetected and strengthened.

The accompanying drawing diagrammatically illustrates a receivingarrangement for telegraphic or telephonic purposes which may also beused as a relay, an alternative method of connecting the receivingtelephone being indicated in dotted lines.

The receiver comprises two luminous arcs eomected in series and having aself regu Serial No. 738,305.

lating arrangement. One of the metal electrodes 01s common to both arcs.lhe electrically mounted positive electrode 1 of the one luminous arcand the negative electrode 2 of theother are are arranged on oppositesides of the electrode 0 which is suspended like a pendulum at 4.4 bymeans of a spring blade 43. The two outer electrodes l. and 2 arecarried by downwardly extending spring blades and 46 which are attachedto the connecting terminals 47 and 48 respectively. Correspondingv toeach or" the three electrodes is a holding magnet 49, 50 or 51 and toeach of the two outer electrodes l and 2' there is provided in additionto the holding magnet a regulating magnet 52 or 53.

The current for feeding the luminous arc may be derived for example froma lighting circuit conductor, provided with a reducing rheostat, forexample an incandescent lamp,

or preferably with an-accumulator battery connected in the arrangementshown through a self induction coil 1% of the kind described to theconnecting terminal 47 and the negative terminal 12 is connected to thecon necting terminal 48, through the winding of the holding magnet 49or" the central electrode 0 and through a self induction coii 25. Theholding magnet 50 and the regu. lating magnet 52 of one of the luminousarcs (0, 1) are included in a shunt 5e: and a second shunt 55 includesthe holding magnet 51 and the regulating magnet 53 of the other luminousare (0, 2).

The luminous arcs are influenced by a magnet system which in the exampleillustrated consists of two electromagnets 56 and 57 arranged one oneach side of the spring blade 43 carrying the central electrode 0. Thecoils of these electromagnets 56 and 57 are connected in series andincluded'in a conductor 58 which is connected to the terminals 59 and60.

By means of a switch 61 the terminals 59 and can be included in aconductor 62 connected to the transmitter or, asshown, constituting anair conductor or antenna, which picks up the electric waves transmittedby the transmitter. By moving the switch 61 overonto two other terminals63 and 64 the air conductor 62 can be connected to a conductor 65 whichincludes a number dotted lines,

which matured into Patent No.

of resonance relays 66, 67, 68, 69 in the form of monotelephones orother devices of the usual kind, tuned for various numbers of periodsand connected up in series or in parallel. Arranged in connection witheach resonance relay is a signaling device 66, 67, 68 or 69, which isset in operation when the corresponding relay responds and which may beoptical or acoustical or both.

' As soon as the waves coming from the transmitter reach the conductor58 through the air conductor 62 and flow electromagnets 56 and 57 thesemagnets act upon the elastically mounted electrode 0 so that the twoluminous arcs are varied in the rhythm of or in accordance with theincoming electric waves or the disturbances imposed upon such waves.nets 56, 57 may be arranged to move along guide bars and may haveadjustable cores which act in common by means of an electrode carryingspring as just described upon one electrode, or may each act separatelyupon one corresponding electrode.

' The current fluctuations set up in the receiving circuit can betransmitted by means of any suitable method of connection to thetelephonic or telegraphic receiver or relay proper. By way of exampletwo different methods of connection are illustrated in the drawing.

In one method of connection the current fluctuations are transmitted bymeans of the self induction coil 25' and by transformation to theinduction coil 7 2 placed in the circuit 70 of the receiving telephone71 In the other method of connection, shown by the condenser shown in mycoapplication Serial No. 738304 1,116,130, November 3, 1914, is used.The condenser plates 38, 39 are then connected in parallel,

y the conductors 40, 41 to the luminous arcs at the two connectingterminals 47 and 48 thereof, while coil 42, which is adapted thecondenser plates for pending ductor 70 with the telephone 71. When us nga capacitative-inductive coupling of this kind the condenser is chargedby the I alternating tension produced in the primary receiving circuitby the fluctuating current. When the condenser is discharged a changeagain takes place in the electrostatic field, I whereby induced currentsare 'the coil 42, which induced currents are emproduced ployed in thereceiving telephone 71.

- If the switch 61 be moved onto the termifalls 63 and 64 for thepurpose of receiving a call, the resonance relay conductor 65 will beswitched into circuit. Supposing now for.

example that that relay of'a group of relays Wl'llch 1s tuned to 500double vibrations be caused to respond, so much reducing resistthroughthe i The electromagcordance with the oscillations ance will be switchedinto the transmitting station system that the vibration generatorthereof will produce about 500 periods. Only that resonance relay 66,67, 68 or. 69 which is tuned to 500 double vibrations will then respondand set its corresponding signaling device 66, 67' 68' or 69 inoperation. The switch apparatus 61 may be so arranged in a well knownway that when the person thus called takes the telephone off the switchhook the receiver circuit is switched in automatically.

The parts may be so arranged that the calling current is only led intothe circuit 65 of the resonance relays after it has been strengthened bya telephone relay.

It is obvious that various other arrange. ments of the magnets andmethods of con- .nection may be used without departing from the scope ofthis invention.

Claims:

1. In an apparatus for receiving and re-- trol the oscillations thereof,and electromagnetic means acting upon the arcs in" acto be rem forced. i

2. In an apparatus for receiving and relaying electrical oscillations, alocal circuit comprising a plurality of electric arcs, oscillatingelectrodes for said arcs, an electromagnet for each electrode forcontrolling the oscillations thereof, said electromagnets beingsupplied'with current from said local circuit, and furtherelectro-magnets acting upon some of the electrodes to cause oscillations of the same, the said further electromagnets being acted upon bythe electrical oscillations to be detected and reinforced.

3. In an apparatus for receiving and strengthening electricaloscillations, a local circuit comprising a plurality of electric arcs,oscillating electrodes for said arcs'comprising'outer electrodes havingone arcing point and inner electrodes arranged between the outerelectrodes and having two arcing points, an electro-magnet for eachouter electrode supplied with current from said local circuit, andfurther electro-magncts acting upon the inner electrodes,electro-magnets being acted upon by the electrical oscillations to bedetected.

4. In an apparatus for receiving and relaying electrical oscillations, alocal circuit comprising a plurality of electric arcs, oscillatingelectrodes for said arcs comprisin outer electrodes having one arcingpolnt an inner electrodes arranged between the outer electrodes andhaving two arcing points, an electro magnet for each outer electrodesuplied with current from said local circuit, and furtherelectro-magnets acting upon the the said further inner electrodes, thesaid further electromagnets being acted upon by the electricaloscillations to be detected.

5. In an apparatus for receiving and relaying electrical oscillations, alocal circuit comprising two electric arcs, three oscillat, ingelectrodes for said arcs, one of them having two arcing points and beingarranged between the two other electrodes having one arcing point each,an electromagnet for each electrode to maintain its position withvarying force and supplied with current from said local circuit, afurther electromagnet for each of the outer electrodes to regulate theirdistance from the inner electrode and connected in series with the otherelectro-magnet allotted to said electrode, and further electro-magnetsacting upon the inner electrode, the said further electro-magnets beingacted upon by the electrical oscillations to be detected.

6. In an apparatus for receiving and relaying electrical oscillations, alocal circuit comprising two electric arcs between three electrodesmounted on oscillating supports for said arcs, one of them having twoarc- ,ing points and arranged between the two dioactive substancesarranged in proximity thereto, oscillating electrodes for said arcs andmeans acting upon the arcs in accordance with the oscillations to bereinforced.

8. In an apparatus for receiving and relaying electrical oscillations, alocal circuit comprising a plurality of electric arcs, oscillatingelectrodes for said arcs consisting of alloys containing radioactivemetal components, and means acting upon the arcs in accordance with theoscillations to be reinforced.

9. In an apparatus for receiving and re laying electrical oscillations,a plurality of vibrating electrodes for forming arcs between them inseries, a local circuit including said electrodes, and 'electro-magneticmeans to stabilize the vibrations of said electrodes, means controlledby the oscillations to be reinforced to vary in accordance therewith thearcing distance between said electrodes and thereby similarly controlthe 10- cal circuit, and means electrically connected to said localcircuit to receive local current varied in accordance with saidoscillations.

In testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses.

DR. JOSEF SCHIESSLER.

